/**
 * Copyright (C) 2014
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package psn.shan.demo.xml.enhancedvalidator;

import java.util.Arrays;

import javax.inject.Inject;
import javax.inject.Named;

import lombok.extern.slf4j.Slf4j;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import psn.shan.xml.enhancedvalidator.EnhancedValidator;
import psn.shan.xml.enhancedvalidator.StaticValidationException;
import psn.shan.xml.enhancedvalidator.rules.DynamicValidationException;
import psn.shan.xml.enhancedvalidator.rules.RuleLoaderException;

/**
 * Executor <br />
 *
 * To show off what is done in rest of the project
 * Takes an intrusive approach where validation is directly invoked.
 *
 * @author Shan
 *
 */
@Named
@Slf4j
public class Executor {

	//	Validator specific for the Person Data.
	@Inject
	private EnhancedValidator<PersonRuleSet> mEnhancedValidator;

	// String Literals
	private static final String PERSON_XML = "PersonData.xml";
	private static final String PERSON_XSD = "PersonData.xsd";

	/**
	 * Executes the validator, passing the XML and XSD documents as Streams.
	 */
	private void execute() {
			try {
				mEnhancedValidator.validate(this.getClass().getClassLoader().getResourceAsStream(PERSON_XML), 
											this.getClass().getClassLoader().getResourceAsStream(PERSON_XSD));
			} catch (StaticValidationException e) {
				log.error("Ran in to trouble:");
				e.printStackTrace();
			} catch (RuleLoaderException e) {
				log.error("Ran in to trouble:");
				e.printStackTrace();
			} catch (DynamicValidationException e) {
				// This means some of the rules failed and there may be one or more messages.
				log.info("Found problems:");
				for (String lMessage : e.getMessages()) {
					log.info("\t " + lMessage);
				}
			}
	}

	/**
	 * Main boilerplate
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		// Get Spring started
		log.debug("Initiating Spring Context ...");
		ConfigurableApplicationContext lAppContext = new ClassPathXmlApplicationContext("PersonDataValidator.xml");

		//	Print the list of beans in context for debug purposes
		String[] beanNames = lAppContext.getBeanDefinitionNames();
		Arrays.sort(beanNames);
		for (String beanName : beanNames) {
			log.debug(beanName + " is of type " + lAppContext.getType(beanName));
		}

		// Get the Main bean and start the show
		log.debug("Initiating the application ...");
		Executor lExecutor = lAppContext.getBean(Executor.class);
		lExecutor.execute();

		// See you later
		log.debug("Closing Spring Context and terminating the application ...");
		lAppContext.close();
	}
}
